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Scientists Help Pinpoint Threats to Life in World's Rivers

Rivers and streams supply the life-blood to ecosystems across the globe, providing water for drinking and irrigation for humans as well as a wide array of life forms from single-celled organisms up to the fish humans eat. But humans and nature itself are making it tough on rivers to continue in their central role to support fish species, according to new research by a team of scientists including John Sabo, a biologist at Arizona State University.

Globally, rivers and streams are being drained due to human use and climate change. These and other human impacts alter the natural variability of river flows. Some affected rivers have dried and no longer run, while others have seen increases in the variability of flows due to storm floods.

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